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他身背三角架，手拎仪器箱，每天起早贪黑，晴天一身汗，雨天一身泥，晚上记录复核到深夜geographiclocationYibincityislocatedinbeautifulrichofabundance--SichuanbasinSouthmargin,islocatedinn103°39'-105°20',latitude27°49'-29°16'Zhijian;YibinEastand,Luzhoucity,adjacent;Northandzigongcitydevelopment12thafiveyearsplanningplatformforintoYucityintertracknetworkplanning(2011-2030)nationalandplaceofrelatedplanning,andpolicyYibinCitytourismdevelopmentplanningYibincityeasecityholdblockingspecialplanningYibincityrelatedtabletsdistrictcontrolsexdetailedplanningYibincitypublictrafficdevelopmentplanningYibincitylandusinggeneralplanningYibincityindustrialconcentrateddistrictlayoutplanning1.4planningbackgroundYibincityinsandsRiver,andminjiangRiverandYangtzeRiverofSanjiangintersectionat,isChinafamousofwineare,belongstochuan,andYunnan,andGuizhouthreeprovincecombinedDepartmentarea,knownasYangtzeRiverCity,said,isinpanxi-liupanshuiimportantpartoftheresource-richregion.Inthenewmasterplan,asthenationalhistoricalandculturalcityinYibincity,China,DepartmentofSichuan-Yunnan-Guizhou-basedregionalcenterintheupperreachesCountiesare:Yibin,andJiang'an,andchangningCounty,andGaoPingshanCounty,xingwenjunlian,andGong,and,and,and.2.1-2administrativemapofYibin,Yibincity,endof2014thecity'stotalpopulationof5.5429millionpeople,residentpopulationof825,000peopleintheCenter.2.1.3socialeconomicdevelopmentinYibincity,2014toachieveGDPof144.381billionyuan,anincreaseof8%,keepingthetotalprovince-4thplace;localpublicbudgetincomeof10.56billionyuan,ranking4thplace,above-scaleindustrialaddedvalueof78.716billionyuan,ranking3rdinsocialretailsalesofconsumergoodstotaled56.169billionyuan,ranking4thin24990Yuanofdisposableincomepercapitaofurbanresidents,percapitanetincomeoffarmers9831,Share12314.5:60.0:25.5.Wine-makingindustry,《生物体维持pH稳定的机制》教学设计1、【教材分析】本节实验的教学内容是人教版生物必修三《稳态与环境》“第一章人体的内环境与稳态”的“第二节内环境稳态的重要性”所附属的实验。该节实验内容是学生理解第二节内环境稳态的重要性的基础，也为第二章《动物和人体生命活动的调节》的的讲解做好了铺垫。本节内容涉及的概念、原理和生理过程较多，而且抽象、复杂，难以理解，本节实验教学帮助学生学好知识，提高学习兴趣。2、【学习对象分析】本节课针对的是高二学生。（1）知识基础学生们已经在第一节和第二节的学习中学习了细胞生活的环境和内环境稳态，对稳态调节的机制已经有了一个大致的了解。学生具有一定的观察思维能力，但逻辑推理能力及对实验现象的分析能力有待进一步提高（2）心理特征学生思维活跃，不怕困难，具有一定的主动思考与动手操作的能力。在教师的指导下，学生具有一定的分析能力和相互合作的能力，归纳总结得出结论。学生已经认识到生物学的趣味性和生物学与现实生活的密切联系，对生物学产生浓厚的兴趣，并试着用课堂上学到的知识解决一些现实生活中的问题。3、【教学目标】（1）知识目标：尝试解释生物体维持PH稳定的机制（2）能力目标：1．学会用表格记录实验结果统计数据，并能够分析实验数据获取相关信息2．学会使用pH计。3．根据所得数据，能顺利做出溶液中加入酸碱以后pH曲线变化图。(3)情感目标：1.小组合作，增强团队协作意识。2.能够理论联系实际，学习生命科学的兴趣，养成乐于探索、勤于思考的习惯。4、【重点难点】教学重点：①解释生物体维持pH稳定的机制；②提高实验探究能力。教学难点：pH计的使用方法。五、【教学方法】他身背三角架，手拎仪器箱，每天起早贪黑，晴天一身汗，雨天一身泥，晚上记录复核到深夜geographiclocationYibincityislocatedinbeautifulrichofabundance--SichuanbasinSouthmargin,islocatedinn103°39'-105°20',latitude27°49'-29°16'Zhijian;YibinEastand,Luzhoucity,adjacent;Northandzigongcitydevelopment12thafiveyearsplanningplatformforintoYucityintertracknetworkplanning(2011-2030)nationalandplaceofrelatedplanning,andpolicyYibinCitytourismdevelopmentplanningYibincityeasecityholdblockingspecialplanningYibincityrelatedtabletsdistrictcontrolsexdetailedplanningYibincitypublictrafficdevelopmentplanningYibincitylandusinggeneralplanningYibincityindustrialconcentrateddistrictlayoutplanning1.4planningbackgroundYibincityinsandsRiver,andminjiangRiverandYangtzeRiverofSanjiangintersectionat,isChinafamousofwineare,belongstochuan,andYunnan,andGuizhouthreeprovincecombinedDepartmentarea,knownasYangtzeRiverCity,said,isinpanxi-liupanshuiimportantpartoftheresource-richregion.Inthenewmasterplan,asthenationalhistoricalandculturalcityinYibincity,China,DepartmentofSichuan-Yunnan-Guizhou-basedregionalcenterintheupperreachesCountiesare:Yibin,andJiang'an,andchangningCounty,andGaoPingshanCounty,xingwenjunlian,andGong,and,and,and.2.1-2administrativemapofYibin,Yibincity,endof2014thecity'stotalpopulationof5.5429millionpeople,residentpopulationof825,000peopleintheCenter.2.1.3socialeconomicdevelopmentinYibincity,2014toachieveGDPof144.381billionyuan,anincreaseof8%,keepingthetotalprovince-4thplace;localpublicbudgetincomeof10.56billionyuan,ranking4thplace,above-scaleindustrialaddedvalueof78.716billionyuan,ranking3rdinsocialretailsalesofconsumergoodstotaled56.169billionyuan,ranking4thin24990Yuanofdisposableincomepercapitaofurbanresidents,percapitanetincomeoffarmers9831,Share12314.5:60.0:25.5.Wine-makingindustry,启发式教学与探究式教学相结合。6.【教学策略】1、加强预习环节，培养主动学习的习惯。2、重视组织教学，提高实验课效率，本实验的组织形式以小组活动为主，教师对小组活动给予指导。3、加强讨论和总结，落实教学目标。7、【教学准备】1．准备实验材料。⑴实验试剂的配制①0.1mol/LNaOH：将4gNaOH放在1L的烧杯内，缓缓加入500mL的蒸馏水，不停地搅拌直至溶解。然后定容至1000mL。②0.1mol/LHCl：将8mL浓盐酸加于500蒸馏水中，再定容至1000mL。③PH=7的磷酸缓冲液：（分别采用了以下配置方法）称取6gNaH2PO4加于291mL0.1mol/LNaOH溶液中，定容至1000mL。贮备液A：0.2mol/L磷酸二氢钠（NaH2PO4·H2O27.8g配成1000mL）贮备液B：0.2mol/L磷酸氢二钠（Na2HPO4·7H2O53.65g或Na2HPO4·12H2ONa2HPO4·12H2O71.7g配成1000mL）取195.0mLA+305.0mLB，稀释至1000mL。⑵生物材料的制备①猪肝匀奖：将10g新鲜的猪肝放入100mL蒸馏水中，用匀浆机榨成匀浆。②马铃薯匀浆：将10g去皮马铃薯块茎放入100mL蒸馏水中，用匀浆机榨成匀浆。③黄瓜匀浆：将10g去皮黄瓜放入100mL蒸馏水中，用匀浆机榨成匀浆。④鸡蛋清：用蒸馏水5：1稀释鸡蛋清，搅拌均匀。教师于课前根据班级学生人数，按以上配方准备实验试剂和生物材料匀浆。将生物材料匀浆及PH=7的磷酸缓冲液分别盛于帖有各自标签的大烧杯中，放在讲台上，供各小组自由选择。每个大烧杯旁准备1个100mL量筒供学生使用。学生实验台上每组提供以下器材及试剂：50mL烧杯2个、0.1mol/LNaOH（盛于滴瓶中）、0.1mol/LHCl（盛于滴瓶中）、PH计、镊子2把、彩色铅笔。2．多媒体课件。他身背三角架，手拎仪器箱，每天起早